Answer:
Step-by-step explanation:
Given that A is a square matrix and A is idempotent

Consider I-A
i) 
It follows that I-A is also idempotent
ii) Consider the matrix 2A-I

So it follows that 2A-I matrix is its own inverse.
Answer:
<h2>12 feet 8 inch long cast a shadow</h2>
Step-by-step explanation:
A person 6 feet tall standing 18 feet away a lamppost cast a 9 foot shadow.
than move 4 feet than total distance is 22 feet
According to trigonometry rule make 30 degree angle


or

than

answer
Because the symbol is greater than and equal to Y it would be a solid line with the blue are to the right of the red line
the correct graph would be B
Answer:
4 over 15 is the answer ....